WenmarOpen by Wenmar Pro

Service bulletins for the 2003 GMC Sierra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

938 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
01139B2003-11-19. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING COMPRESSOR BELT OR TENSIONER JUMPS OR FLUTTERS CAUSING A RATTLE NOISE. SERVICE VME. *TT
01267A2003-11-19. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ON, THE 4WD IS INOPERATIVE AND NO CODES BESIDES U1000 CODES. SERVICE VME. *TT
013122003-11-18. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. FUEL LEAK CONCERN FROM THE FUEL RAIL PRESSURE SENSOR. *TT
0804032003-11-05. Service bulletin. POWER TRAIN. THIS VME MESSAGE APPLIES TO THE VALVE BODY FOR THE ALLISON SERIES 1000 TRANSMISSION REVISED FOR THE 2004 MODEL YEAR TO ADD MODULATED MAIN PRESSURE CONTROL. THIS REVISION WILL PROVIDE ADDITIONAL TRANSMISSION OIL COOLER FLOW AND REDUCE PUMP LOAD DURING CERTAIN LOW SPEED OPERATING CONDITIONS. *TT
0717032003-10-31. Service bulletin. INTERIOR LIGHTING. SERVICE FOUR-WHEEL DRIVE LIGHT AND THE FOUR-WHEEL DRIVE IS INOPERATIVE. *TT
0715032003-10-31. Service bulletin. STRUCTURE:BODY. REVISED REQUIREMENTS FOR INSTALLING THE RUNNING BOARD. *TT
020846010E2003-10-03. Service bulletin. UNKNOWN OR OTHER. PROGRAMMING ONSTAR MODULE FOR CANADIAN FRENCH VOICE RECOGNITION. *TT UPDATE. *TT UPDATED *EH
0308640222003-10-02. Service bulletin. STRUCTURE:BODY:DOOR. INFORMATION ON REMOVING THE FRONT DOOR TRIM PANEL DURING SWITCH REMOVAL TO AVOID BREAKAGE. *TT
0308440112003-10-02. Service bulletin. STRUCTURE:BODY. TWEETER SPEAKER RATTLE IN FRONT SIDE DOOR(S), TWEETER SPEAKER FALLS OUT OF POSITION. *TT
020605003C2003-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN/VIBRATION. *TT UPDATE. *TT
0308640182003-09-29. Service bulletin. EXTERIOR LIGHTING. OUTSIDE REARVIEW MIRROR COURTESY LAMP FALLS OUT, BULB BURNS OUT. *TT
030862001A2003-09-29. Service bulletin. STRUCTURE:BODY:BUMPERS. RUST ON BACK SIDE OF FRONT BUMPER. *TT
030730020A2003-09-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION HAS A HARSH 1-2 SHIFT, SLIPPING 1-2 SHIFT FOLLOWED BY A HARSH ENGAGEMENT. *TT
0306040332003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P0336. *TT UPDATE. TO INCLUDE 2004 ISUZU NQR COMMERCIAL MODELS. *TT
0306040322003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT ON WITH NO DRIVABILITY CONCERNS, DIAGNOSTIC TROUBLE CODE P0120, P0220, P1516, OR P1518 SET. *TT
0306040312003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P1125. *TT
030602005A2003-09-29. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT LOSS WITH NO VISIBLE LEAKS. *TT UPDATED *EH
0304180032003-09-27. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REVISED WHEEL DRIVE SHAFT INNER JOINT AND SEAL REPLACEMENT. *TT
0303080022003-09-27. Service bulletin. SUSPENSION. RATTLE/SQUEAK FROM FRONT OF VEHICLE. *TT *AR
0301390082003-09-27. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CHANGES IN AIR CONDITIONING COMPESSOR ON/OFF INSTRUMENT PANEL DISPLAY SYMBOL FROM 2003 TO 2004 MODEL YEAR AND SYNCHRONIZING THE DRIVER AND PASSENGER SET TEMPERATURES. *TT
020601010A2003-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. SERPENTINE BELT IDENTIFICATION AND DIAGNOSIS FOR MEDIUM DUTY TRUCKS. VARIOUS MODELS INCLUDING THE CHEVROLET AND GMC C5500 MD 2003. *TT
010846002C2003-09-26. Service bulletin. EQUIPMENT. PROGRAMMING OF REPLACEMENT ONSTAR VEHICLE COMMUNICATION AND INTERFACE MODULES (VCIM). *TT
020138007A2003-09-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER WILL NOT BLOW COLD ENOUGH. *TT *AR
000842010A2003-09-26. Service bulletin. EXTERIOR LIGHTING. DAYTIME RUNNING LAMP (DRL) BULB REPLACEMENT. *TT
020592003-09-13. Service bulletin. ELECTRICAL SYSTEM:IGNITION. WRONG SPARK PLUGS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.